Features High accuracy with LCD: Accuracy up to 0.01, comes with LCD display, supports adjustment of the rotary encoder, two ports without polarity Generate voltage and control current: this generator can use 4-20 mA to generate voltage and control the current in the circuit Practical check: the display mode can be set for easy display of values and provides great convenience for your work Adjustable output range: the output range can be set to 4-20 mA (device control) or to 21 mA (signal debugging). Calibrated output: the linear output can be calibrated, the actual output can match the customer's device display Specification: Element Type: Power Signal Generator Supply voltage: 15-30 V. Output Range: 4-20mA Display mode: Current current, percent, Hz Sampling resistance: less than 500Ω Output accuracy: ±0.5%. Display accuracy: 0.01. Hole size approx. 77 x 40 mm / 3.03 x 1.57 inches. Package list: 1 x power signal generator. 1 x user manual (English language not guaranteed). Package List 1 x Current Signal Generator 1 x User Manual